Maricopa County COVID-19 Update

  • Diagnostic tests (usually PCR) help medical providers determine whether a person has evidence of active infection. This testing informs our daily COVID-19 case count.
  • Antibody tests, also known as serology tests, look for the presence of antibodies that are made by the body and indicate a recent or past infection; antibody tests are not as helpful for diagnosing active infections.

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